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W. H. TRAPHAGEN. G'TE FOR' ELBVATORS.

4 Sheets-Sheet 1.

Ne. 504,407. Petented Sept. 5,1893.

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(No Model.) I

W. H.@TRAPHAGEN.

GATE POR ELEVATORS Wduesses MM @aM/4 673%( UNITED STATES PATENT OFFICE.

TALOOTT d; CO., 0F SAME PLACE.

GATE FOR ELEVATO RS.

SPECIFICATION forming part of Letters Patent No. 504,407, datedSeptember 5, 1893.

Application filed November 21, 1892. Serial No. 452.630. (No model.)

To all whom it may con/cern:

Be it known that I, WILLIAM H. TEAPHA- GEN, a citizen of the UnitedStates, residing at Rockford, in the county of Winnebago and State ofIllinois, have invented certain new and useful Improvements in Gates forElevators, of which the following is a specification.

The object of this invention is to construct a gate to close thepassageway leading into the elevator shaft, said gate capable ofavertical sliding movement and operated by a connection between the gateand the elevator car, said connection being formed during the raisingand lowering movements of the gate.

In the accompanying drawings-Figure 1 is an isometrical representationof my improvements, showing the gate in its closed position. Fig. 2 is asimilar view in which the gate is elevatcd,or opened. Fig. 3 shows themechanism for operatin g the gate, said mechanism having a connectionwith the elevator car.' Fig. 4 is a vertical section of the upper end ofthe guideway for the gate. Fig. 5 is an isometrical representation ofthe rear side of the board to which the devices are connected. Figs. 6,7 and 8 are vertical, central sections of the sliding head which has ayconnection with the gate showing the various gate, showing the variouspositions of the parts during -the closing movements of the gate. Fig.12 is an isometrical representation of the double ended dog which has aconnection with the sliding heads.,

My improvements consist in arranging a separate set of devices for eachelevator shaft gate for each ioor which requires a gate to preventaccidents by people stepping into the elevator shaft, and a connectionbeing formed between the moving elevator car and the devices so that asthe elevator car approaches the floor the gatefor thattloor is raisedand will remain raised until the elevator car begins to leave the iioorwhen the gate is closed and the counectionbetween the elevatorcar andthe devices is broken so that the elevatorcar can operate upon the nextset of devices, either during the raising or lowering movements of theelevator car. The elevator shaft gate in this instance consists of ahorizontal arm lwhich extends across the opening leading to the elevatorshaft. At oneend of thsarmisconnected a vertical bar 2, held in itsrelation with the horizontal arm 1 by a diagonal brace 3. To thisvertical bar 2 are secured guides 4, which slide upon the guide bar 5,in this instance made from gas pipe and supported at its ends onbrackets6, secured to the woodwork of the building. These brackets have a stud 7which enters the ends of the gas pipe as shown at Fig. 4. The-free endof the horizontal bar l of the gate is guided between the vertical bars.8, which are secured to the woodwork of the building.

Thedevicesforoperatingthegate arelocated upon a baseboard 9, saidbaseboard being provided with two vertical slots 10, having their endsenlarged. Metallic strips 11 are secured to both faces of the baseboardand form the surface upon which the sliding heads move. The enlargedends of the slots are provided with a, metallic lining 12, having thelower edge of the upper opening and the upper edge of the lower openingin semi circular form. The sliding heads have a connection with thebaseboard and are composed of two sections. The rear section is providedwith a base 13, having tubular studs 14, which enter the vertical slots10 and a central recessed stud 15, within which is placed a spiralspring 16. The front section of the sliding head is of rectangular form,having a central opening 17 and four openings 18, and s also has twotubular studs 19. The upper end of this front section is provided with aperforated lip 20. Within this front section is placed a double endeddog 21, which is provided with studs 22 and a central extension 23 andis so placed that the extension will pass over the centralV opening 17and the studs 22 will lie in the openings 18. This front section isconnected with the rear section by bolts 24 and to properly seat theparts the meeting faces of the tubular studs 14 are in concave formwhile the ends of the tubular studs 19 are in convex form, and the partswill be firmly held when bolted together. The free end of the spring 16enters a recess 25 and holds the dog in a yielding manner in itsengagement IOO with the front portion of the sliding head. A slidinghead constructed as above described is placed in each of the verticalslots in the baseboard and they have a connection with each other bymeans of a rope or cable, 26, passing over a pulley 27 secured to theupper end of the baseboard in such a manner that as one of the slidingheads is raised the other will be lowered.

An arm 23 is secured to the sliding head nearest the sliding gate byentering a recess in the lower end of the sliding head. The free end ofthis arm is received between the forks of a bracket 29, secured to thevertical bar in the sliding gate in such a manner that a connection isformed between this sliding head and the gate and any movementi mpartedtothe sliding head will also be im parted to the gate. A weight 30 issecured to the sliding head farthest from the gate and acts as acounterbalance to the gate so that very little power is required to raise andlower the gate. `Vhen the parts are in the position shown at Fig. 1, ifthe sliding head which has a connection with the gate should be raised,the gate will also be raised and the other sliding head will be loweredwhen the parts will occupy the position shown at Fig. 2, and should thesliding head farthest from the gate be raised the gate and the slidinghead having a connection therewith will descend when the parts willassume their original position shown at Fig. 1.

The means for raisingthe sliding heads have a connection with theelevator so as to move therewith, said means consisting of abracket 31having an arm 32 rigidly connected and extending in a horizontaldirection. One end of the bracket is slotted and between its arms ispivoted a gravity dog 33. One of these brackets is connectedto a beam 34having a connection with and rising from the elevator car and the secondbracket has a connection with abrace bar 35 which has a connection withthe vertical beam 34, also with the beam 436 to which is attachedahoisting mechanism for the `elevator car.

`It will be noticed that the bracket attached to the upper end of thebeam 34 has the gravity dog in its upper end, while the bracket attachedto the brace bar has the gravity dog in its lower end. It will also benoticed that the pivots for the dogs are so arranged as to hold the dogsin a horizontal position so that the lip 37 of the dog will engageacross bar 38, connecting the arms of the bracket. These brackets arelocated directly in front of the vertical slots in the base board, butsome distancefrom the face thereof.

Suppose the gate to be in its closed position as shown at Fig. l and theelevator car should be on the next floor below and it is desired to movethe elevator car upward to this floor. The upward movement of theelevator car willbring the rigid arm 32 of the bracket secured totheupper end of the beam 34 in contact with the under side of the extension23 of the double ended dog as shown at Fig. G,

the gravity dog 33 being moved upon its pivot to allow such arrangement.The continued upward movem ent of the elevator would cause `the upperend of the double ended dog to lie in contact with the metallic face ofthe base board, while the lower end of the double ended dog would beheld in its seat in the front section of the sliding head. Consequentlythe sliding head will be moved upward carrying the gate with it, untilthe lioor of the elevator car is nearly liush with the iloor of thebuilding and at this point the upper end of the double ended dog wouldenter the enlarged upper end of the slot in the baseboard as shown atFig. 3 which would allow the rigid arm of the bracket secured to theelevator to pass, and should the elevator stop at this-floor,` the gatewould remain open as shown at Fig. 1. Should the elevator car continuein its upward movement the rigid arm of the bracket secured to the bracebar 35 would come in contact with the central extension 23 of thebracket of the sliding head farthest from the gate as shown at Fig. 9,and cause the slidinghead to move upward which would cause the gate todescend and when the sliding head had reached the upper end ofthe slotthe gatewould be closed and the upper end of lthe i double ended dogwould move into the enlarged upper end of the slot, allowing the bracketto pass by as shown at Fig. 11. At Figs. 7 and 10 is shown the positionof the double ended dog lwhen the sliding heads arefree from theenlarged ends ott-he slots in the baseboard. I thus` have shown that thegate will be raised and lowered whilethe elevator car is passing eachfloor. Should the elevator be: descending the reverse of `the movementsjust 'described will be; given the parts.

The object of the gravity dog 33 is: Should theelevator stop when thebracket secured tothe upper end of the beam 34 had reached thepositionshownat Fig-8 and it were desired to lower the elevator thecentral extension 23 would be` placed between the gravity dog and therigid arm 32 so that asthe elevator were lowered the gravity dog wouldcome in contact with the upper face of the extension 23, carrying thesliding head with it, consequently lowering the gate until the lower endof the double ended l dog would enter the enlarged lower end of the slotin the face of the baseboard, permitting the bracket to pass by thesliding head. It will also be noticed thatI have held the double endeddog in position in a yielding manner bythe spiral spring 16, which isnecessary to allowthe lower end of'the dog to enterthelower enlarged endand the upper end of the dog to enter the enlarged upper end of the`vertical slot in the face of the baseboard in order that theconnection'between theelevator proper and the sliding gatemaybefdisconnected when the gatehas been either Araised or lowered sothat the elevator may move to a different floor, leaving the mechanismto operate the gate in proper position to be appreached by the elevatorwhen passing or stopping at a given floor. The rubber blocks 39 willhold the double ended dog against the metallic guide ways, preventingthe rattling of the parts.

I claim as my invention- Y l. The combination of an elevator gate, twosliding heads having a flexible connection, one of the heads having aconnection with the gate, non-pivoted double ended dogs, each looselyseated in one of the heads, a spring bearing centrally against each dog,holding the dog in its normal position and brackets secured to the car,each of the brackets adapted to engage one of the dogs thereby movingthe sliding heads.

2. The combination of an elevator gate, two sliding heads having aiiexible connection, one of the heads having a connection with the gate,each head composed of two sections bolted together, double ended dogseach having a connection with one of the sections of each head, a springfor each dog holding it in its normal position and brackets secured tothe car engaging the dogs, thereby moving the sliding heads.

3. The combination of an elevator gate,having a vertical slidingmovement, a base board provided with two vertical slots having enflarged ends, a sliding head for each of the slots, a double ended dogfor each sliding head and having a projection extending therefrom,brackets secured to the car engaging the projections and moving thesliding heads in their engagement with the base boad.

4; The combination of an elevator gate, two sliding heads having aexibleconnection, one of the heads having a connection with the gate, doubleended dogs having engagements with the heads, a spring for each dogholding them in their normal positions and brackets secured to the carengaging the dogs, thereby moving the sliding heads, and movable dogs l'supported by the brackets.

WILLIAM H. TRAPHAGEN. Witnesses:

A. O. BEHEL, GEORGE WILSON.

